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Forced flame dynamics and self-excited instabilities of laminar premixed flames

Karthik Kashinath (Energy)

 

A simple laminar premixed flame is modelled using a level set approach and subjected to velocity forcing to identify the mechanisms of heat release oscillations. This flame model is coupled with a linear acoustic solver to study self-excited oscillations. Regimes in which the flame exhibits triggering are identified. Next steps to extend this model to a more realistic situation are identified – including a vortical velocity field, equivalence ratio variation and a more realistic flame geometry.


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